Yu Darvish felt some hip discomfort earlier this offseason, but after altering his weight-lifting program he reported to the Texas Rangers feeling healthy.
Darvish told the Japanese media that his trainer recommended he quit lifting heavy weights and that the hip felt better starting in mid-January.
The 27-year-old was the runner-up in the AL Cy Young balloting in 2013 after going 13-9 with a 2.83 ERA in 32 starts (209 2/3 innings).